William Thompson Galloway (March 31, 1844 - March 20, 1924) was a lithographic printer based in San Francisco in the late 19th century. Details on Galloway's life are scant. He was born in Philadelphia, Pennsylvania and migrated to San Francisco in his youth, initially working as an accountant. In 1873, he joined Grafton Tyler Brown and Co. (established 1865), lithographers and steam press operators. Brown, who was African-American as well as a fellow Pennsylvania native, was also an accomplished artist and illustrator. Much of the information available on Galloway has been discovered by biographers of Brown (namely Robert J. Chandler, who wrote a 2014 book about Brown). As for Galloway, he and business partner Otto Schoning purchased Brown's firm in 1878, leaving Brown free to pursue landscape painting. Although the new firm, 'William T. Galloway,' broke sharply with Brown's style, the two men shared an office, and Brown appears to have continued to contribute to the new printshop's output for a time. Galloway kept up a regular output, but his works appeared to drop off in the 1890s, though the company operated in some form until at least 1935 (newspaper accounts from the 1880s and 1890s suggest that Galloway had enough employees to field a company baseball team for a local amateur league). Despite the company retaining his name, Galloway himself appears to have taken up other business ventures in the early 20th century. He died in March 1924, apparently a wealthy man (a bitter familial dispute over his estate followed his death).